Ruby on rails 致命错误（用户 **** 的密码验证失败）

Question

对不起我的英语不好

当我尝试运行本地服务器时，rails 给了我这个问题：

ActiveRecord :: ConnectionNotEstablished: FATAL: failed password authentication for user "Blog"

Caused by:
PG :: ConnectionBad: FATAL: failed authentication with password for user "Blog"

但我的密码和用户名都是正确的。

这里是我的 YAML 文件

default: &default
  adapter: postgresql
  encoding: unicode

development:
  <<: *default
  database: Blog_development
  encoding: UTF-8
  username: Blog
  password: Giungla
  host: localhost
  port: 5432

test:
  <<: *default
  database: Blog_test

production:
  <<: *default
  database: Blog_production
  username: Blog
  password: <%= ENV['BLOG_DATABASE_PASSWORD'] %>

我的终端中的踪迹

** rails db:migrate --trace
** Invoke db:migrate (first_time)
** Invoke db:load_config (first_time)
** Invoke environment (first_time)   
** Execute environment
** Execute db:load_config
** Execute db:migrate
rails aborted!
ActiveRecord::ConnectionNotEstablished: FATALE:  autenticazione con password fallita per l'utente "Blog"
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:83:in `rescue in new_client'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:77:in `new_client'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in `postgresql_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_handling.rb:327:in `retrieve_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_handling.rb:283:in `connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/tasks/database_tasks.rb:237:in `migrate'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:92:in `block (3 levels) in <main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:90:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:90:in `block (2 levels) in <main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `block in execute'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `execute'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `synchronize'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `invoke_with_call_chain'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:188:in `invoke'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:160:in `invoke_task'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block (2 levels) in top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block in top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:125:in `run_with_threads'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:110:in `top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:24:in `block (2 levels) in perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:24:in `block in perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/rake_module.rb:59:in `with_application'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:18:in `perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/command.rb:50:in `invoke'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands.rb:18:in `<main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
bin/rails:4:in `<main>'

Caused by:
PG::ConnectionBad: FATALE:  autenticazione con password fallita per l'utente "Blog"
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/pg-1.2.3-x64-mingw32/lib/pg.rb:58:in `initialize'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/pg-1.2.3-x64-mingw32/lib/pg.rb:58:in `new'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/pg-1.2.3-x64-mingw32/lib/pg.rb:58:in `connect'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:78:in `new_client'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/postgresql_adapter.rb:37:in `postgresql_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `public_send'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:882:in `new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:926:in `checkout_new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:905:in `try_to_checkout_new_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:866:in `acquire_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:588:in `checkout'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:428:in `connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_adapters/abstract/connection_pool.rb:1128:in `retrieve_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_handling.rb:327:in `retrieve_connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/connection_handling.rb:283:in `connection'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/tasks/database_tasks.rb:237:in `migrate'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:92:in `block (3 levels) in <main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:90:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/activerecord-6.1.4/lib/active_record/railties/databases.rake:90:in `block (2 levels) in <main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `block in execute'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:281:in `execute'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:219:in `block in invoke_with_call_chain'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `synchronize'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:199:in `invoke_with_call_chain'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/task.rb:188:in `invoke'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:160:in `invoke_task'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block (2 levels) in top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `each'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:116:in `block in top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:125:in `run_with_threads'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:110:in `top_level'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:24:in `block (2 levels) in perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/application.rb:186:in `standard_exception_handling'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:24:in `block in perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/rake-13.0.6/lib/rake/rake_module.rb:59:in `with_application'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands/rake/rake_command.rb:18:in `perform'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/command.rb:50:in `invoke'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/railties-6.1.4/lib/rails/commands.rb:18:in `<main>'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
C:/Ruby27-x64/lib/ruby/gems/2.7.0/gems/bootsnap-1.7.5/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
bin/rails:4:in `<main>'
Tasks: TOP => db:migrate**

我该如何解决这个问题？我是铁路新手，我正在努力学习，但现在我卡住了

Answer 1

因此，您的数据库配置被正确使用，因为您的错误消息提到了它尝试进行身份验证的用户名。我认为您在 Rails 中的数据库配置没有任何问题，我认为问题可能在于您的 Postgres 配置不匹配。

我会尝试使用 Postgres CLI 客户端或您喜欢的任何 GUI 数据库客户端连接到数据库。使用与 Rails 配置中相同的凭据，看看是否会遇到相同的错误。

您是如何在 Postgres 数据库中创建此用户的？如果您有可以方便地提供更多详细信息的 SQL 语句。

运行rails db:create 可能是第一个运行的命令，以确保没有任何与迁移相关的可能使事情复杂化的内容。我希望您会收到与该命令相同的错误消息。

另外，你使用什么 Rails 环境来执行这个命令？ （例如开发或生产）。请注意，生产数据库配置使用运行 rails 命令时可能未在 shell 中设置的环境变量 BLOG_DATABASE_PASSWORD。在一个命令中进行测试的最简单方法是：

$ BLOG_DATABASE_PASSWORD=Giungla rails db:migrate

当然，您希望您的生产数据库密码与您的开发数据库不同，这只是一个示例。

我希望这里的一些东西可以帮助你解决它！

Answer 2

登录 Postgresql 数据库，

psql

使用密码“秘密”更改角色博客；